Peptide vs Protein. Amino acids, peptides, and proteins are often referred to as related terms, yet they are different in their characteristics. Amino acids are the building blocks of both peptides and proteins. Amino acid is a small molecule that contains an amino group (-NH 2) and a carboxylic acid group (-COOH), which are bound to a central carbon atom, with an additional hydrogen and a side chain (R-group).
In cardiology, hibernating myocardium is a state when some segments of the myocardium exhibit abnormalities of contractile function.These abnormalities can be visualised with echocardiography, cardiac magnetic resonance imaging (CMR), nuclear medicine (PET) or ventriculography.Echocardiography: A wall motion abnormality at rest which improves during a low-dose dobutamine stress test is classified as hibernating myocardium.Low dose dobutamine stimulates contractile function and thus helps to predict functional recovery after revascularization.his is probably the most accurate way to visualise scarred myocardium. An alternative (or additional) technique with CMR is the use of low dose dobutamine similar to echocardiography. PET: The finding of a perfusion or metabolic mismatch between PET-FDG and PET-NH 3 is indicative of decreased metabolism.
Myocarditis is an inflammation of the myocardium, the middle layer of the heart wall. Myocarditis is usually caused by a viral infection. Signs and symptoms of myocarditis include chest pain, heart failure and abnormal heart rhythms.